/Engine/Plugins/BlueprintFileUtils/Source/BlueprintFileUtils/Public/BlueprintFileUtilsBPLibrary.h
Deletes a directory and all the files in it and optionally all sub-directories and files within it
true if the directory was succesfully deleted, false otherwise
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="FileUtils") static bool DeleteDirectory ( const [FString](API\Runtime\Core\Containers\FString) & Directory, bool bMustExist, bool bDeleteRecursively )